package com.jsmy.marketing.utils;

import android.content.Context;
import android.os.Environment;


import com.jsmy.marketing.base.BaseApplication;

import java.io.File;
import java.math.BigDecimal;

import io.reactivex.Observable;
import io.reactivex.ObservableEmitter;
import io.reactivex.ObservableOnSubscribe;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.schedulers.Schedulers;

/**
 * Created by Administrator on 2018/1/19.
 */

public class CacheDataManager {

    public static final String TAG = "CacheDataManager";

    public static String getFilePath() {
        String directoryPath = "";
        //判断SD卡是否可用
        if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())
                || !Environment.isExternalStorageRemovable()) {
            directoryPath = BaseApplication.getInstance().getExternalFilesDir("").getAbsolutePath();
        } else {
            //没内存卡就存机身内存
//            directoryPath = MyApp.getMyApp().getFilesDir() + File.separator + API.APP_FILE;
            directoryPath = BaseApplication.getInstance().getFilesDir().getAbsolutePath();
        }
        File file = new File(directoryPath);
        if (!file.exists()) {//判断文件目录是否存在
            file.mkdirs();
        }
        L.e(TAG, "filePath====>" + directoryPath);
        return directoryPath;
    }

    public static String getCachePath() {
        String directoryPath = "";
        //判断SD卡是否可用
        if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())
                || !Environment.isExternalStorageRemovable()) {
            directoryPath = BaseApplication.getInstance().getExternalCacheDir().getAbsolutePath();
        } else {
            //没内存卡就存机身内存
//            directoryPath = MyApp.getMyApp().getCacheDir().getAbsolutePath() + File.separator + API.APP_CACHE;
            directoryPath =BaseApplication.getInstance().getCacheDir().getAbsolutePath();
        }
        File file = new File(directoryPath);
        if (!file.exists()) {//判断文件目录是否存在
            file.mkdirs();
        }
        L.e(TAG, "cachePath====>" + directoryPath);
        return directoryPath;
    }

    public static Observable<String> getTotalCacheSize(final Context context) {
        return Observable.create(new ObservableOnSubscribe<String>() {
            @Override
            public void subscribe(ObservableEmitter<String> e) throws Exception {

                long cacheSize = getFolderSize(context.getCacheDir());
                if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
                    cacheSize += getFolderSize(context.getExternalCacheDir());
                }
                String total = getFormatSize(cacheSize);
                e.onNext(total);
                e.onComplete();
            }
        }).subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread());

    }

    public static Observable<String> clearAllCache(final Context context) {

        return Observable.create(new ObservableOnSubscribe<String>() {
            @Override
            public void subscribe(ObservableEmitter<String> e) throws Exception {
                deleteDir(context.getCacheDir());
                if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
                    deleteDir(context.getExternalCacheDir());
                }
                e.onNext("Y");
                e.onComplete();
            }
        }).subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread());
    }

    private static boolean deleteDir(File dir) {

        if (dir != null && dir.isDirectory()) {

            String[] children = dir.list();

            for (int i = 0; i < children.length; i++) {

                boolean success = deleteDir(new File(dir, children[i]));

                if (!success) {

                    return false;

                }

            }

        }

        return dir.delete();

    }

// 获取文件

// Context.getExternalFilesDir() --> SDCard/Android/data/你的应用的包名/files/

// 目录，一般放一些长时间保存的数据

// Context.getExternalCacheDir() -->

// SDCard/Android/data/你的应用包名/cache/目录，一般存放临时缓存数据

    public static long getFolderSize(File file) throws Exception {

        long size = 0;

        try {

            File[] fileList = file.listFiles();

            for (int i = 0; i < fileList.length; i++) {

                // 如果下面还有文件

                if (fileList[i].isDirectory()) {

                    size = size + getFolderSize(fileList[i]);

                } else {

                    size = size + fileList[i].length();

                }

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

        return size;

    }

    /**
     * 格式化单位
     *
     * @param size
     */

    private static String getFormatSize(double size) {

        double kiloByte = size / 1024;

        if (kiloByte < 1) {

            return size + "Byte";

        }

        double megaByte = kiloByte / 1024;

        if (megaByte < 1) {

            BigDecimal result1 = new BigDecimal(Double.toString(kiloByte));

            return result1.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "KB";

        }

        double gigaByte = megaByte / 1024;

        if (gigaByte < 1) {

            BigDecimal result2 = new BigDecimal(Double.toString(megaByte));

            return result2.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "MB";

        }

        double teraBytes = gigaByte / 1024;

        if (teraBytes < 1) {

            BigDecimal result3 = new BigDecimal(Double.toString(gigaByte));

            return result3.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "GB";

        }

        BigDecimal result4 = new BigDecimal(teraBytes);

        return result4.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString() + "TB";

    }

}
